Costeño Beach Surf Forecast and Surf Report

Alright, grab your board, let's see what's cooking.

We've got a run of surf at Costeño Beach that kicks off on Saturday the 12th of September. It's not going to be a classic right away, but there's a clear window of clean conditions later that's worth pointing out. The water's sitting at about 83°, which is around average for the time of year, so no surprises there.

The first couple of days are a bit messy. Saturday morning has a 7ft NE swell, which is decent size, but it's cross-on with a 9 mph breeze. The combined wave energy is moderate (624), but it'll be choppy. The swell period is short, just 8 seconds, so it's windswell and won't have much punch. Saturday afternoon gets even worse wind.

Sunday the 13th sees the swell drop to 6ft, still NE, but the real shift happens Sunday afternoon. The wind goes glassy, absolutely dead calm. That's your moment. It stays small but clean through Monday the 14th, with swells around 4ft to 4ft and those glassy conditions continuing. The energy is weak (286 to 264), but for a beginner-friendly spot, clean waves at that size are a gem.

The standouts in this outlook are Sunday afternoon, the 13th and all day Monday, the 14th. The wind is glass, the swell is manageable (6ft down to 4ft), and it's coming from the NE, which matches the optimum direction for Costeño Beach. It won't be world-class power, but for a wave that's consistent and clean, you can't argue. The period is short, so it's not a groundswell with long waits; you'll get plenty of waves.

The rest of the first week through the 18th is mixed. The wind picks up again, and while the swell hangs around the 5ft to 6ft range, the conditions are often cross-on or only glassy in the afternoons. Thursday the 17th afternoon (6ft NE, glassy) and Friday the 18th morning (5ft NE, glassy) are decent follow-ups, but not as clean as the Sunday/Monday window.

From the 19th onwards into the second week, it drops off hard. Swell sizes tumble to under 3ft, with periods of 6 seconds and weak energy (often less than 100). There are some glassy pockets, but the waves are just too small to get excited about. This is a long flat spell from about the 20th right through to the end of the window. You're looking at waist-high or smaller dribble, with combined energy that's barely registering.

The best advice? Pounce on Sunday afternoon and all of Monday. The rest of the first week has some small windows, but nothing beats that glassy, clean, head-high-ish surf with the best possible wind for the spot.

Rusty.

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